!!!
html
	head
		meta(name="viewport",content="width=device-width,initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no")
	body
		form(action="key",method="post")
			textarea#key(name="key",style="width:100%;height:200px")
			input(style="width:100%;height:50px",type="submit") 提交

